TileLayer with ArcGIS Map Tile Service Map Appearing At Wrong Longitude...

[jfuehner]

I am trying to use the TileLayer with an ArcGIS Map Tile Service.

I am running into an issue where the tiles render at the wrong latitude. When fully zoomed out the map renders in the top half of the deck canvas when I would expect it to be centered. With the map rendering in the wrong hemisphere the coordinates are all off... The spatial reference on the service is 4326; not sure if that has something to do with it. I created a CodePen showing the issue with the world/tiles rendering in the upper half of the canvas.

I had to specify a TileLayer data url in the format of z/y/x to get the tiles. The z also appears to need an offset of -1 to display the entire world at 0 zoom scale. I created a CodePen showing the issue with the entire world not rendering.

How can I make the map tiles render correctly?

const layer = new TileLayer({
  id: 'TileLayer',
  data: 'https://sampleserver1.arcgisonline.com/ArcGIS/rest/services/PublicSafety/PublicSafetyBasemap/MapServer/tile/{z}/{y}/{x}.png',
 
  renderSubLayers: props => {
    const {
      bbox: {west, south, east, north}
    } = props.tile;

    return new BitmapLayer(props, {
      data: null,
      image: props.data,
      bounds: [west, south, east, north]
    });
  }
});

[Pessimistress]

TileLayer in MapView (aka Web Mercator projection/EPSG:3857) only uses OSM tile encoding: https://deck.gl/docs/api-reference/geo-layers/tile-layer#indexing-system you need to use the OrthographicView if you want to render 4326.

See this thread
#5539 (reply in thread)

[jfuehner]

@Pessimistress so switching to the OrthographicView causes the map to appear in the bottom right of the screen. See this CodePen. I have tried a number of different options but, clearly I am missing something with how to render a basemap correctly in this view and the sublayer (i.e., BitmapLayer)...

Any help would be great!

[sclebal]

@jfuehner you have to update your initial view state to the format accepted by OrtographicView (you can see it here). I've been experimenting with you CodePen and target: [250, 120, 0], seems a good value.

[jfuehner]

@Clebal thanks! That was super helpful. So, the target property is a xyz array?

It appears as though the OrthographicView OrthographicController does not support all the same capabilities the MapController supports...

The OrthographicView certainly does not appear to be a drop in replacement for the MapView even though I can render the 4326 projection. Definitely, would be nice if the TileLayer could support different projections or perhaps the MapView could support various projections in a more user friendly way.

[sclebal]

@jfuehner exactly, it's a xyz array.

[kylebarron]

As further commentary, I think the TileLayer should allow the user to set the tiling parameters to render non-Web Mercator tiles in a geospatial view. I'd encourage you to read and comment on #5504. The goal there is to expose more tiling parameters as public exports and allow you to implement another tiling system such as 4326 yourself. See also #5513 (reply in thread)